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author | Maurus Cuelenaere <mcuelenaere@gmail.com> | 2008-07-11 15:50:46 +0000 |
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committer | Maurus Cuelenaere <mcuelenaere@gmail.com> | 2008-07-11 15:50:46 +0000 |
commit | 14c7f45cdae826f88dc539c8c38dd95caf305731 (patch) | |
tree | 832da054b7cfb2dc6fd63339af736625f31d21aa /utils/zenutils/libraries/zlib123/zlib/example.c | |
parent | 7c84ede3781c27db73403bd6302f320c76a58c8c (diff) | |
download | rockbox-14c7f45cdae826f88dc539c8c38dd95caf305731.tar.gz rockbox-14c7f45cdae826f88dc539c8c38dd95caf305731.zip |
Add zook's ZenUtils to SVN
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18010 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'utils/zenutils/libraries/zlib123/zlib/example.c')
-rwxr-xr-x | utils/zenutils/libraries/zlib123/zlib/example.c | 565 |
1 files changed, 565 insertions, 0 deletions
diff --git a/utils/zenutils/libraries/zlib123/zlib/example.c b/utils/zenutils/libraries/zlib123/zlib/example.c new file mode 100755 index 0000000000..455a1d062a --- /dev/null +++ b/utils/zenutils/libraries/zlib123/zlib/example.c | |||
@@ -0,0 +1,565 @@ | |||
1 | /* example.c -- usage example of the zlib compression library | ||
2 | * Copyright (C) 1995-2004 Jean-loup Gailly. | ||
3 | * For conditions of distribution and use, see copyright notice in zlib.h | ||
4 | */ | ||
5 | |||
6 | /* @(#) $Id$ */ | ||
7 | |||
8 | #include <stdio.h> | ||
9 | #include "zlib.h" | ||
10 | |||
11 | #ifdef STDC | ||
12 | # include <string.h> | ||
13 | # include <stdlib.h> | ||
14 | #endif | ||
15 | |||
16 | #if defined(VMS) || defined(RISCOS) | ||
17 | # define TESTFILE "foo-gz" | ||
18 | #else | ||
19 | # define TESTFILE "foo.gz" | ||
20 | #endif | ||
21 | |||
22 | #define CHECK_ERR(err, msg) { \ | ||
23 | if (err != Z_OK) { \ | ||
24 | fprintf(stderr, "%s error: %d\n", msg, err); \ | ||
25 | exit(1); \ | ||
26 | } \ | ||
27 | } | ||
28 | |||
29 | const char hello[] = "hello, hello!"; | ||
30 | /* "hello world" would be more standard, but the repeated "hello" | ||
31 | * stresses the compression code better, sorry... | ||
32 | */ | ||
33 | |||
34 | const char dictionary[] = "hello"; | ||
35 | uLong dictId; /* Adler32 value of the dictionary */ | ||
36 | |||
37 | void test_compress OF((Byte *compr, uLong comprLen, | ||
38 | Byte *uncompr, uLong uncomprLen)); | ||
39 | void test_gzio OF((const char *fname, | ||
40 | Byte *uncompr, uLong uncomprLen)); | ||
41 | void test_deflate OF((Byte *compr, uLong comprLen)); | ||
42 | void test_inflate OF((Byte *compr, uLong comprLen, | ||
43 | Byte *uncompr, uLong uncomprLen)); | ||
44 | void test_large_deflate OF((Byte *compr, uLong comprLen, | ||
45 | Byte *uncompr, uLong uncomprLen)); | ||
46 | void test_large_inflate OF((Byte *compr, uLong comprLen, | ||
47 | Byte *uncompr, uLong uncomprLen)); | ||
48 | void test_flush OF((Byte *compr, uLong *comprLen)); | ||
49 | void test_sync OF((Byte *compr, uLong comprLen, | ||
50 | Byte *uncompr, uLong uncomprLen)); | ||
51 | void test_dict_deflate OF((Byte *compr, uLong comprLen)); | ||
52 | void test_dict_inflate OF((Byte *compr, uLong comprLen, | ||
53 | Byte *uncompr, uLong uncomprLen)); | ||
54 | int main OF((int argc, char *argv[])); | ||
55 | |||
56 | /* =========================================================================== | ||
57 | * Test compress() and uncompress() | ||
58 | */ | ||
59 | void test_compress(compr, comprLen, uncompr, uncomprLen) | ||
60 | Byte *compr, *uncompr; | ||
61 | uLong comprLen, uncomprLen; | ||
62 | { | ||
63 | int err; | ||
64 | uLong len = (uLong)strlen(hello)+1; | ||
65 | |||
66 | err = compress(compr, &comprLen, (const Bytef*)hello, len); | ||
67 | CHECK_ERR(err, "compress"); | ||
68 | |||
69 | strcpy((char*)uncompr, "garbage"); | ||
70 | |||
71 | err = uncompress(uncompr, &uncomprLen, compr, comprLen); | ||
72 | CHECK_ERR(err, "uncompress"); | ||
73 | |||
74 | if (strcmp((char*)uncompr, hello)) { | ||
75 | fprintf(stderr, "bad uncompress\n"); | ||
76 | exit(1); | ||
77 | } else { | ||
78 | printf("uncompress(): %s\n", (char *)uncompr); | ||
79 | } | ||
80 | } | ||
81 | |||
82 | /* =========================================================================== | ||
83 | * Test read/write of .gz files | ||
84 | */ | ||
85 | void test_gzio(fname, uncompr, uncomprLen) | ||
86 | const char *fname; /* compressed file name */ | ||
87 | Byte *uncompr; | ||
88 | uLong uncomprLen; | ||
89 | { | ||
90 | #ifdef NO_GZCOMPRESS | ||
91 | fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n"); | ||
92 | #else | ||
93 | int err; | ||
94 | int len = (int)strlen(hello)+1; | ||
95 | gzFile file; | ||
96 | z_off_t pos; | ||
97 | |||
98 | file = gzopen(fname, "wb"); | ||
99 | if (file == NULL) { | ||
100 | fprintf(stderr, "gzopen error\n"); | ||
101 | exit(1); | ||
102 | } | ||
103 | gzputc(file, 'h'); | ||
104 | if (gzputs(file, "ello") != 4) { | ||
105 | fprintf(stderr, "gzputs err: %s\n", gzerror(file, &err)); | ||
106 | exit(1); | ||
107 | } | ||
108 | if (gzprintf(file, ", %s!", "hello") != 8) { | ||
109 | fprintf(stderr, "gzprintf err: %s\n", gzerror(file, &err)); | ||
110 | exit(1); | ||
111 | } | ||
112 | gzseek(file, 1L, SEEK_CUR); /* add one zero byte */ | ||
113 | gzclose(file); | ||
114 | |||
115 | file = gzopen(fname, "rb"); | ||
116 | if (file == NULL) { | ||
117 | fprintf(stderr, "gzopen error\n"); | ||
118 | exit(1); | ||
119 | } | ||
120 | strcpy((char*)uncompr, "garbage"); | ||
121 | |||
122 | if (gzread(file, uncompr, (unsigned)uncomprLen) != len) { | ||
123 | fprintf(stderr, "gzread err: %s\n", gzerror(file, &err)); | ||
124 | exit(1); | ||
125 | } | ||
126 | if (strcmp((char*)uncompr, hello)) { | ||
127 | fprintf(stderr, "bad gzread: %s\n", (char*)uncompr); | ||
128 | exit(1); | ||
129 | } else { | ||
130 | printf("gzread(): %s\n", (char*)uncompr); | ||
131 | } | ||
132 | |||
133 | pos = gzseek(file, -8L, SEEK_CUR); | ||
134 | if (pos != 6 || gztell(file) != pos) { | ||
135 | fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n", | ||
136 | (long)pos, (long)gztell(file)); | ||
137 | exit(1); | ||
138 | } | ||
139 | |||
140 | if (gzgetc(file) != ' ') { | ||
141 | fprintf(stderr, "gzgetc error\n"); | ||
142 | exit(1); | ||
143 | } | ||
144 | |||
145 | if (gzungetc(' ', file) != ' ') { | ||
146 | fprintf(stderr, "gzungetc error\n"); | ||
147 | exit(1); | ||
148 | } | ||
149 | |||
150 | gzgets(file, (char*)uncompr, (int)uncomprLen); | ||
151 | if (strlen((char*)uncompr) != 7) { /* " hello!" */ | ||
152 | fprintf(stderr, "gzgets err after gzseek: %s\n", gzerror(file, &err)); | ||
153 | exit(1); | ||
154 | } | ||
155 | if (strcmp((char*)uncompr, hello + 6)) { | ||
156 | fprintf(stderr, "bad gzgets after gzseek\n"); | ||
157 | exit(1); | ||
158 | } else { | ||
159 | printf("gzgets() after gzseek: %s\n", (char*)uncompr); | ||
160 | } | ||
161 | |||
162 | gzclose(file); | ||
163 | #endif | ||
164 | } | ||
165 | |||
166 | /* =========================================================================== | ||
167 | * Test deflate() with small buffers | ||
168 | */ | ||
169 | void test_deflate(compr, comprLen) | ||
170 | Byte *compr; | ||
171 | uLong comprLen; | ||
172 | { | ||
173 | z_stream c_stream; /* compression stream */ | ||
174 | int err; | ||
175 | uLong len = (uLong)strlen(hello)+1; | ||
176 | |||
177 | c_stream.zalloc = (alloc_func)0; | ||
178 | c_stream.zfree = (free_func)0; | ||
179 | c_stream.opaque = (voidpf)0; | ||
180 | |||
181 | err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); | ||
182 | CHECK_ERR(err, "deflateInit"); | ||
183 | |||
184 | c_stream.next_in = (Bytef*)hello; | ||
185 | c_stream.next_out = compr; | ||
186 | |||
187 | while (c_stream.total_in != len && c_stream.total_out < comprLen) { | ||
188 | c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ | ||
189 | err = deflate(&c_stream, Z_NO_FLUSH); | ||
190 | CHECK_ERR(err, "deflate"); | ||
191 | } | ||
192 | /* Finish the stream, still forcing small buffers: */ | ||
193 | for (;;) { | ||
194 | c_stream.avail_out = 1; | ||
195 | err = deflate(&c_stream, Z_FINISH); | ||
196 | if (err == Z_STREAM_END) break; | ||
197 | CHECK_ERR(err, "deflate"); | ||
198 | } | ||
199 | |||
200 | err = deflateEnd(&c_stream); | ||
201 | CHECK_ERR(err, "deflateEnd"); | ||
202 | } | ||
203 | |||
204 | /* =========================================================================== | ||
205 | * Test inflate() with small buffers | ||
206 | */ | ||
207 | void test_inflate(compr, comprLen, uncompr, uncomprLen) | ||
208 | Byte *compr, *uncompr; | ||
209 | uLong comprLen, uncomprLen; | ||
210 | { | ||
211 | int err; | ||
212 | z_stream d_stream; /* decompression stream */ | ||
213 | |||
214 | strcpy((char*)uncompr, "garbage"); | ||
215 | |||
216 | d_stream.zalloc = (alloc_func)0; | ||
217 | d_stream.zfree = (free_func)0; | ||
218 | d_stream.opaque = (voidpf)0; | ||
219 | |||
220 | d_stream.next_in = compr; | ||
221 | d_stream.avail_in = 0; | ||
222 | d_stream.next_out = uncompr; | ||
223 | |||
224 | err = inflateInit(&d_stream); | ||
225 | CHECK_ERR(err, "inflateInit"); | ||
226 | |||
227 | while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) { | ||
228 | d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */ | ||
229 | err = inflate(&d_stream, Z_NO_FLUSH); | ||
230 | if (err == Z_STREAM_END) break; | ||
231 | CHECK_ERR(err, "inflate"); | ||
232 | } | ||
233 | |||
234 | err = inflateEnd(&d_stream); | ||
235 | CHECK_ERR(err, "inflateEnd"); | ||
236 | |||
237 | if (strcmp((char*)uncompr, hello)) { | ||
238 | fprintf(stderr, "bad inflate\n"); | ||
239 | exit(1); | ||
240 | } else { | ||
241 | printf("inflate(): %s\n", (char *)uncompr); | ||
242 | } | ||
243 | } | ||
244 | |||
245 | /* =========================================================================== | ||
246 | * Test deflate() with large buffers and dynamic change of compression level | ||
247 | */ | ||
248 | void test_large_deflate(compr, comprLen, uncompr, uncomprLen) | ||
249 | Byte *compr, *uncompr; | ||
250 | uLong comprLen, uncomprLen; | ||
251 | { | ||
252 | z_stream c_stream; /* compression stream */ | ||
253 | int err; | ||
254 | |||
255 | c_stream.zalloc = (alloc_func)0; | ||
256 | c_stream.zfree = (free_func)0; | ||
257 | c_stream.opaque = (voidpf)0; | ||
258 | |||
259 | err = deflateInit(&c_stream, Z_BEST_SPEED); | ||
260 | CHECK_ERR(err, "deflateInit"); | ||
261 | |||
262 | c_stream.next_out = compr; | ||
263 | c_stream.avail_out = (uInt)comprLen; | ||
264 | |||
265 | /* At this point, uncompr is still mostly zeroes, so it should compress | ||
266 | * very well: | ||
267 | */ | ||
268 | c_stream.next_in = uncompr; | ||
269 | c_stream.avail_in = (uInt)uncomprLen; | ||
270 | err = deflate(&c_stream, Z_NO_FLUSH); | ||
271 | CHECK_ERR(err, "deflate"); | ||
272 | if (c_stream.avail_in != 0) { | ||
273 | fprintf(stderr, "deflate not greedy\n"); | ||
274 | exit(1); | ||
275 | } | ||
276 | |||
277 | /* Feed in already compressed data and switch to no compression: */ | ||
278 | deflateParams(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY); | ||
279 | c_stream.next_in = compr; | ||
280 | c_stream.avail_in = (uInt)comprLen/2; | ||
281 | err = deflate(&c_stream, Z_NO_FLUSH); | ||
282 | CHECK_ERR(err, "deflate"); | ||
283 | |||
284 | /* Switch back to compressing mode: */ | ||
285 | deflateParams(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED); | ||
286 | c_stream.next_in = uncompr; | ||
287 | c_stream.avail_in = (uInt)uncomprLen; | ||
288 | err = deflate(&c_stream, Z_NO_FLUSH); | ||
289 | CHECK_ERR(err, "deflate"); | ||
290 | |||
291 | err = deflate(&c_stream, Z_FINISH); | ||
292 | if (err != Z_STREAM_END) { | ||
293 | fprintf(stderr, "deflate should report Z_STREAM_END\n"); | ||
294 | exit(1); | ||
295 | } | ||
296 | err = deflateEnd(&c_stream); | ||
297 | CHECK_ERR(err, "deflateEnd"); | ||
298 | } | ||
299 | |||
300 | /* =========================================================================== | ||
301 | * Test inflate() with large buffers | ||
302 | */ | ||
303 | void test_large_inflate(compr, comprLen, uncompr, uncomprLen) | ||
304 | Byte *compr, *uncompr; | ||
305 | uLong comprLen, uncomprLen; | ||
306 | { | ||
307 | int err; | ||
308 | z_stream d_stream; /* decompression stream */ | ||
309 | |||
310 | strcpy((char*)uncompr, "garbage"); | ||
311 | |||
312 | d_stream.zalloc = (alloc_func)0; | ||
313 | d_stream.zfree = (free_func)0; | ||
314 | d_stream.opaque = (voidpf)0; | ||
315 | |||
316 | d_stream.next_in = compr; | ||
317 | d_stream.avail_in = (uInt)comprLen; | ||
318 | |||
319 | err = inflateInit(&d_stream); | ||
320 | CHECK_ERR(err, "inflateInit"); | ||
321 | |||
322 | for (;;) { | ||
323 | d_stream.next_out = uncompr; /* discard the output */ | ||
324 | d_stream.avail_out = (uInt)uncomprLen; | ||
325 | err = inflate(&d_stream, Z_NO_FLUSH); | ||
326 | if (err == Z_STREAM_END) break; | ||
327 | CHECK_ERR(err, "large inflate"); | ||
328 | } | ||
329 | |||
330 | err = inflateEnd(&d_stream); | ||
331 | CHECK_ERR(err, "inflateEnd"); | ||
332 | |||
333 | if (d_stream.total_out != 2*uncomprLen + comprLen/2) { | ||
334 | fprintf(stderr, "bad large inflate: %ld\n", d_stream.total_out); | ||
335 | exit(1); | ||
336 | } else { | ||
337 | printf("large_inflate(): OK\n"); | ||
338 | } | ||
339 | } | ||
340 | |||
341 | /* =========================================================================== | ||
342 | * Test deflate() with full flush | ||
343 | */ | ||
344 | void test_flush(compr, comprLen) | ||
345 | Byte *compr; | ||
346 | uLong *comprLen; | ||
347 | { | ||
348 | z_stream c_stream; /* compression stream */ | ||
349 | int err; | ||
350 | uInt len = (uInt)strlen(hello)+1; | ||
351 | |||
352 | c_stream.zalloc = (alloc_func)0; | ||
353 | c_stream.zfree = (free_func)0; | ||
354 | c_stream.opaque = (voidpf)0; | ||
355 | |||
356 | err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); | ||
357 | CHECK_ERR(err, "deflateInit"); | ||
358 | |||
359 | c_stream.next_in = (Bytef*)hello; | ||
360 | c_stream.next_out = compr; | ||
361 | c_stream.avail_in = 3; | ||
362 | c_stream.avail_out = (uInt)*comprLen; | ||
363 | err = deflate(&c_stream, Z_FULL_FLUSH); | ||
364 | CHECK_ERR(err, "deflate"); | ||
365 | |||
366 | compr[3]++; /* force an error in first compressed block */ | ||
367 | c_stream.avail_in = len - 3; | ||
368 | |||
369 | err = deflate(&c_stream, Z_FINISH); | ||
370 | if (err != Z_STREAM_END) { | ||
371 | CHECK_ERR(err, "deflate"); | ||
372 | } | ||
373 | err = deflateEnd(&c_stream); | ||
374 | CHECK_ERR(err, "deflateEnd"); | ||
375 | |||
376 | *comprLen = c_stream.total_out; | ||
377 | } | ||
378 | |||
379 | /* =========================================================================== | ||
380 | * Test inflateSync() | ||
381 | */ | ||
382 | void test_sync(compr, comprLen, uncompr, uncomprLen) | ||
383 | Byte *compr, *uncompr; | ||
384 | uLong comprLen, uncomprLen; | ||
385 | { | ||
386 | int err; | ||
387 | z_stream d_stream; /* decompression stream */ | ||
388 | |||
389 | strcpy((char*)uncompr, "garbage"); | ||
390 | |||
391 | d_stream.zalloc = (alloc_func)0; | ||
392 | d_stream.zfree = (free_func)0; | ||
393 | d_stream.opaque = (voidpf)0; | ||
394 | |||
395 | d_stream.next_in = compr; | ||
396 | d_stream.avail_in = 2; /* just read the zlib header */ | ||
397 | |||
398 | err = inflateInit(&d_stream); | ||
399 | CHECK_ERR(err, "inflateInit"); | ||
400 | |||
401 | d_stream.next_out = uncompr; | ||
402 | d_stream.avail_out = (uInt)uncomprLen; | ||
403 | |||
404 | inflate(&d_stream, Z_NO_FLUSH); | ||
405 | CHECK_ERR(err, "inflate"); | ||
406 | |||
407 | d_stream.avail_in = (uInt)comprLen-2; /* read all compressed data */ | ||
408 | err = inflateSync(&d_stream); /* but skip the damaged part */ | ||
409 | CHECK_ERR(err, "inflateSync"); | ||
410 | |||
411 | err = inflate(&d_stream, Z_FINISH); | ||
412 | if (err != Z_DATA_ERROR) { | ||
413 | fprintf(stderr, "inflate should report DATA_ERROR\n"); | ||
414 | /* Because of incorrect adler32 */ | ||
415 | exit(1); | ||
416 | } | ||
417 | err = inflateEnd(&d_stream); | ||
418 | CHECK_ERR(err, "inflateEnd"); | ||
419 | |||
420 | printf("after inflateSync(): hel%s\n", (char *)uncompr); | ||
421 | } | ||
422 | |||
423 | /* =========================================================================== | ||
424 | * Test deflate() with preset dictionary | ||
425 | */ | ||
426 | void test_dict_deflate(compr, comprLen) | ||
427 | Byte *compr; | ||
428 | uLong comprLen; | ||
429 | { | ||
430 | z_stream c_stream; /* compression stream */ | ||
431 | int err; | ||
432 | |||
433 | c_stream.zalloc = (alloc_func)0; | ||
434 | c_stream.zfree = (free_func)0; | ||
435 | c_stream.opaque = (voidpf)0; | ||
436 | |||
437 | err = deflateInit(&c_stream, Z_BEST_COMPRESSION); | ||
438 | CHECK_ERR(err, "deflateInit"); | ||
439 | |||
440 | err = deflateSetDictionary(&c_stream, | ||
441 | (const Bytef*)dictionary, sizeof(dictionary)); | ||
442 | CHECK_ERR(err, "deflateSetDictionary"); | ||
443 | |||
444 | dictId = c_stream.adler; | ||
445 | c_stream.next_out = compr; | ||
446 | c_stream.avail_out = (uInt)comprLen; | ||
447 | |||
448 | c_stream.next_in = (Bytef*)hello; | ||
449 | c_stream.avail_in = (uInt)strlen(hello)+1; | ||
450 | |||
451 | err = deflate(&c_stream, Z_FINISH); | ||
452 | if (err != Z_STREAM_END) { | ||
453 | fprintf(stderr, "deflate should report Z_STREAM_END\n"); | ||
454 | exit(1); | ||
455 | } | ||
456 | err = deflateEnd(&c_stream); | ||
457 | CHECK_ERR(err, "deflateEnd"); | ||
458 | } | ||
459 | |||
460 | /* =========================================================================== | ||
461 | * Test inflate() with a preset dictionary | ||
462 | */ | ||
463 | void test_dict_inflate(compr, comprLen, uncompr, uncomprLen) | ||
464 | Byte *compr, *uncompr; | ||
465 | uLong comprLen, uncomprLen; | ||
466 | { | ||
467 | int err; | ||
468 | z_stream d_stream; /* decompression stream */ | ||
469 | |||
470 | strcpy((char*)uncompr, "garbage"); | ||
471 | |||
472 | d_stream.zalloc = (alloc_func)0; | ||
473 | d_stream.zfree = (free_func)0; | ||
474 | d_stream.opaque = (voidpf)0; | ||
475 | |||
476 | d_stream.next_in = compr; | ||
477 | d_stream.avail_in = (uInt)comprLen; | ||
478 | |||
479 | err = inflateInit(&d_stream); | ||
480 | CHECK_ERR(err, "inflateInit"); | ||
481 | |||
482 | d_stream.next_out = uncompr; | ||
483 | d_stream.avail_out = (uInt)uncomprLen; | ||
484 | |||
485 | for (;;) { | ||
486 | err = inflate(&d_stream, Z_NO_FLUSH); | ||
487 | if (err == Z_STREAM_END) break; | ||
488 | if (err == Z_NEED_DICT) { | ||
489 | if (d_stream.adler != dictId) { | ||
490 | fprintf(stderr, "unexpected dictionary"); | ||
491 | exit(1); | ||
492 | } | ||
493 | err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary, | ||
494 | sizeof(dictionary)); | ||
495 | } | ||
496 | CHECK_ERR(err, "inflate with dict"); | ||
497 | } | ||
498 | |||
499 | err = inflateEnd(&d_stream); | ||
500 | CHECK_ERR(err, "inflateEnd"); | ||
501 | |||
502 | if (strcmp((char*)uncompr, hello)) { | ||
503 | fprintf(stderr, "bad inflate with dict\n"); | ||
504 | exit(1); | ||
505 | } else { | ||
506 | printf("inflate with dictionary: %s\n", (char *)uncompr); | ||
507 | } | ||
508 | } | ||
509 | |||
510 | /* =========================================================================== | ||
511 | * Usage: example [output.gz [input.gz]] | ||
512 | */ | ||
513 | |||
514 | int main(argc, argv) | ||
515 | int argc; | ||
516 | char *argv[]; | ||
517 | { | ||
518 | Byte *compr, *uncompr; | ||
519 | uLong comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */ | ||
520 | uLong uncomprLen = comprLen; | ||
521 | static const char* myVersion = ZLIB_VERSION; | ||
522 | |||
523 | if (zlibVersion()[0] != myVersion[0]) { | ||
524 | fprintf(stderr, "incompatible zlib version\n"); | ||
525 | exit(1); | ||
526 | |||
527 | } else if (strcmp(zlibVersion(), ZLIB_VERSION) != 0) { | ||
528 | fprintf(stderr, "warning: different zlib version\n"); | ||
529 | } | ||
530 | |||
531 | printf("zlib version %s = 0x%04x, compile flags = 0x%lx\n", | ||
532 | ZLIB_VERSION, ZLIB_VERNUM, zlibCompileFlags()); | ||
533 | |||
534 | compr = (Byte*)calloc((uInt)comprLen, 1); | ||
535 | uncompr = (Byte*)calloc((uInt)uncomprLen, 1); | ||
536 | /* compr and uncompr are cleared to avoid reading uninitialized | ||
537 | * data and to ensure that uncompr compresses well. | ||
538 | */ | ||
539 | if (compr == Z_NULL || uncompr == Z_NULL) { | ||
540 | printf("out of memory\n"); | ||
541 | exit(1); | ||
542 | } | ||
543 | test_compress(compr, comprLen, uncompr, uncomprLen); | ||
544 | |||
545 | test_gzio((argc > 1 ? argv[1] : TESTFILE), | ||
546 | uncompr, uncomprLen); | ||
547 | |||
548 | test_deflate(compr, comprLen); | ||
549 | test_inflate(compr, comprLen, uncompr, uncomprLen); | ||
550 | |||
551 | test_large_deflate(compr, comprLen, uncompr, uncomprLen); | ||
552 | test_large_inflate(compr, comprLen, uncompr, uncomprLen); | ||
553 | |||
554 | test_flush(compr, &comprLen); | ||
555 | test_sync(compr, comprLen, uncompr, uncomprLen); | ||
556 | comprLen = uncomprLen; | ||
557 | |||
558 | test_dict_deflate(compr, comprLen); | ||
559 | test_dict_inflate(compr, comprLen, uncompr, uncomprLen); | ||
560 | |||
561 | free(compr); | ||
562 | free(uncompr); | ||
563 | |||
564 | return 0; | ||
565 | } | ||